I'm going to build a PC with the Lancool PC-K62B. It has a 140mm front fan and a 120mm rear fan and 2 140mm top fans. Hoping it will not be too noisy. I have a spare 120mm fan laying around and I decided to plug it in to see how noisy it can get. I could barely hear it. So, maybe your K58W will not make as much noise. If I remember, once I get my system up and running, I will post here to let you know how much noise it makes.